Hi, Kenton, Thank you for your reply. I want to create light barriers on the Dynamic Lighting layer. But I also want to allow tokens/players to see wherever there is light, whether or not there is a light barrier on the Dynamic Lighting layer. (Overall this will be part of my kluge to create a simulated Explorer Mode that keeps a record of squares revealed for for the party as a whole, rather than the actual Explorer Mode that keeps separate record of squares revealed for each player.) Thanks, Allen